[sdiy] Looking for 2164 12db/oct slopes bandpass filter design.. more detailed..

[David G Dixon]

Yes, I gave up on OTAs entirely once I discovered the 2164.  I didn't like
the extremely limited range of linearity or the fact that the control pin
was a diode drop away from the negative rail.  You can do way cooler stuff
with the 2164 (the only problem with it is that it must terminate to virtual
ground).


>    The main reason was poor SNR.  I tried 13700s back in 2001 
> when the first 480 was being designed. Much noisier than the 
> CA3280 which itself wasn't terribly quiet. In contrast, the 
> 2164 design is near-silent.
> 
> --Crow
> /**/
> 
> On 3/10/2014 6:09 PM, David Moylan wrote:
> > This is cool.  Is there a reason you didn't go for the 13700?
> >
> >
> > On 03/10/2014 03:49 PM, The Old Crow wrote:
> >>    I just got done proofing the production version of my MOTM-480 
> >> CS-80 filter MkII, which uses V2164s in place of the late and 
> >> lamented CA3280s.  It is much quieter while using fewer 
> parts.  I'll 
> >> have DIY info for the 5U/MU-panel bare boards out soon.
> 
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